.swiper-container {
    width: 100%;
    height: 100%;
}
.swiper-wrapper>div:nth-child(1) {
    background: url(/images/lunbo1.jpg) no-repeat 49%;
    background-size: cover;
}
.swiper-wrapper>div:nth-child(2) {
    background: url(/images/lunbo2.jpg) no-repeat 49%;
    background-size: cover;
}
.swiper-wrapper>div:nth-child(3) {
    background: url(/images/lunbo3.jpg) no-repeat 49%;
    background-size: cover;
}
.swiper-slide {
    text-align: center;
    /* Center slide text vertically */
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
}